For service and parts needs, visit your dealer. You will receive genuine GM parts and GM-trained and supported service people.
Genuine GM parts have one of these marks:

Vehicle Care
California Proposition 65 WarningRear Side Door Outside Handle Rod Adjustment
Removal Procedure
Remove the rear door water deflector as needed. Refer to Rear Side Door
Water Deflector Replacement.
Use a flat-head tool to open the clip from the threaded rod connecting
the lock to the outside handle.
Adjust the travel of the handle by removing the threaded rod ...
Interior Lighting
Dome Lamps
The dome lamp controls are located in the headliner.
: Press to turn the lamps off, even
when a door is open.
: Press to turn the lamps on automatically
when a door is opened.
: Press to turn on the dome lamps.
Reading Lamps
The reading lamps are located in the overhead con ...
Installation Procedure
Create 5 x 18 mm (4/16 x 11/16 in) slots for MIG-brazing along the edges
of the tail lamp pocket as noted f rom the
original panel.
Note:
Clean and prepare the attaching surfaces for brazing.
Position the tail lamp pocket on the vehicle.
Verify the fit of the ta ...